Potassium test cost in Washington
In Washington, 59 hospitals publish a cash price for potassium blood test: from $6.21 to $174.14, with a median of $40.15. The lowest price is at Legacy Salmon Creek Medical Center (Vancouver). The highest price is 28.0× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 84132. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 29, 2026. See them on a map
Lowest$6.21Legacy Salmon Creek Medical Center
Median$40.15half of hospitals charge less
Highest$174.14in Washington
Lowest saves$33.94vs the median
Hospitals in Washington, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Legacy Salmon Creek Medical Center lowest Vancouver · Portland-Vancouver-Hillsboro, OR-WA HC POTASSIUM BODY FLUID | $6.21 | $9.56 | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue · Seattle-Tacoma-Bellevue, WA Hc Istat Potassium | $10.50 | $21.00 | Apr 1, 2026 source file |
| Providence Mount Carmel Hospital Colville · Spokane-Spokane Valley, WA HC POTASSIUM SERUM PLASMA/WHOLE BLOOD LAB | $14.00 | $20.00 | Apr 1, 2026 source file |
| Olympic Medical Center Port Angeles · Port Angeles, WA Blood potassium level | $15.20 | $19.00 | Jun 24, 2026 source file |
| PeaceHealth Peace Island Medical Center Friday Harbor · Friday Harbor, WA BLOOD POTASSIUM LEVEL | $19.50 | $30.00 | — source file |
| Confluence Health Hospital Wenatchee · Wenatchee-East Wenatchee, WA HC Assay of Serum Potassium | $20.70 | $23.00 | — source file |
| Prov Sacred Hrt Medical Center & Childs Hospital Spokane · Spokane-Spokane Valley, WA HC POTASSIUM SERUM PLASMA/WHOLE BLOOD LAB | $22.40 | $32.00 | Apr 1, 2026 source file |
| Snoqualmie Valley Hospital Snoqualmie · Seattle-Tacoma-Bellevue, WA Facility Fee HC POTASSIUM-LC | $24.38 | $42.03 | — source file |
| Saint Clare Hospital Lakewood · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $28.28 | $98.10 | Feb 28, 2026 source file |
| Virginia Mason Medical Center Seattle · Seattle-Tacoma-Bellevue, WA POTASSIUM BLOOD | $29.58 | $58.00 | — source file |
| St Anthony Hospital Gig Harbor · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $29.84 | $98.10 | Feb 28, 2026 source file |
| Highline Medical Center Burien · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $29.96 | $98.10 | Feb 28, 2026 source file |
| Providence St Peter Hospital Olympia · Olympia-Lacey-Tumwater, WA HC POTASSIUM BODY FLUID LAB | $30.68 | $59.00 | Apr 1, 2026 source file |
| St Francis Community Hospital Federal Way · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $30.79 | $98.10 | Feb 28, 2026 source file |
| Providence St Luke's Rehabilitation Medical Center Spokane · Spokane-Spokane Valley, WA HC POTASSIUM(K) | $30.87 | $44.10 | Apr 1, 2026 source file |
| Valley Medical Center Renton · Seattle-Tacoma-Bellevue, WA Potassium Serum Plasma/Whole Blood | $31.50 | $45.00 | — source file |
| Summit Pacific Medical Center Elma · Aberdeen, WA Blood potassium level | $31.86 | $59.00 | Aug 31, 2026 source file |
| St Joseph Medical Center Tacoma · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $32.50 | $98.10 | Feb 28, 2026 source file |
| Swedish Edmonds Edmonds · Seattle-Tacoma-Bellevue, WA HC POTASSIUM | $32.64 | $68.00 | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah · Seattle-Tacoma-Bellevue, WA HC POTASSIUM | $32.64 | $68.00 | Apr 1, 2026 source file |
| Swedish Medical Center Seattle · Seattle-Tacoma-Bellevue, WA HC POTASSIUM | $32.64 | $68.00 | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle · Seattle-Tacoma-Bellevue, WA HC POTASSIUM | $32.64 | $68.00 | Apr 1, 2026 source file |
| St Elizabeth Hospital Enumclaw · Seattle-Tacoma-Bellevue, WA HC POTASSIUM ASSAY SERUM POC | $34.67 | $98.10 | Feb 28, 2026 source file |
| Providence Regional Medical Center Everett Everett · Seattle-Tacoma-Bellevue, WA HC POTASSIUM | $35.36 | $68.00 | Apr 1, 2026 source file |
| Willapa Harbor Hospital South Bend · South Bend, WA BLOOD POTASSIUM LEVEL | $35.70 | $51.00 | — source file |
| Whitman Hospital and Medical Center Colfax · Pullman, WA Blood potassium level | $37.60 | $47.00 | Jun 29, 2026 source file |
| PeaceHealth United General Medical Center Sedro Woolley · Mount Vernon-Anacortes, WA BLOOD POTASSIUM LEVEL | $38.35 | $59.00 | — source file |
| Providence Holy Family Hospital Spokane · Spokane-Spokane Valley, WA HC POTASSIUM SERUM PLASMA/WHOLE BLOOD LAB | $38.50 | $55.00 | Apr 1, 2026 source file |
| Shriners Childrens - Spokane Spokane · Spokane-Spokane Valley, WA ASSAY OF SERUM POTASSIUM | $39.90 | $39.90 | — source file |
| Prosser Memorial Health Hospital Prosser · Kennewick-Richland, WA HC POTASSIUM | $40.15 | $73.00 | — source file |
| Ocean Beach Hospital Ilwaco · Ilwaco, WA HC POTASSIUM | $41.25 | $55.00 | — source file |
| Lourdes Health Pasco · Kennewick-Richland, WA ASSAY OF SERUM POTASSIUM | $42.14 | $105.36 | — source file |
| Seattle Children's Hospital Seattle · Seattle-Tacoma-Bellevue, WA Esrd Assay of Serum Potassium | $43.00 | $43.00 | — source file |
| Cascade Valley Hospital Arlington · Seattle-Tacoma-Bellevue, WA HC ASSAY OF SERUM POTASSIUM | $43.20 | $54.00 | — source file |
| St. Michael Medical Center Silverdale · Bremerton-Silverdale-Port Orchard, WA HC POTASSIUM ASSAY SERUM POC | $43.30 | $98.10 | Feb 28, 2026 source file |
| Jefferson Healthcare Port Townsend · Port Townsend, WA Blood potassium level | $48.00 | $60.00 | Aug 6, 2026 source file |
| PeaceHealth St Joseph Medical Center Bellingham · Bellingham, WA BLOOD POTASSIUM LEVEL | $48.10 | $74.00 | — source file |
| Pullman Regional Hospital Pullman · Pullman, WA Blood potassium level | $51.85 | $61.00 | Jun 9, 2026 source file |
| Klickitat Valley Hospital Goldendale · Goldendale, WA POTASSIUM, BLOOD | $52.00 | $65.00 | Dec 2, 2024 source file |
| Skagit Valley Hospital Mount Vernon · Mount Vernon-Anacortes, WA HC ASSAY OF SERUM POTASSIUM | $52.80 | $66.00 | — source file |
| Kittitas County Public Hospital Dist 1 Ellensburg · Ellensburg, WA Blood potassium level | $53.55 | $63.00 | Feb 4, 2026 source file |
| Cascade Medical Center Leavenworth · Wenatchee-East Wenatchee, WA Assay od serum potassium | $53.60 | $67.00 | — source file |
| Kaiser Permanente Central Hospital Seattle · Seattle-Tacoma-Bellevue, WA POTASSIUM SERUM | $53.60 | $67.00 | Apr 1, 2026 source file |
| Quincy Valley Medical Center Quincy · Moses Lake, WA Blood potassium level | $54.02 | $54.02 | May 27, 2026 source file |
| Providence St Joseph Hospital Chewelah · Spokane-Spokane Valley, WA HC POTASSIUM | $56.00 | $80.00 | Apr 1, 2026 source file |
| Providence Centralia Hospital Centralia · Centralia, WA HC POTASSIUM | $57.72 | $111.00 | Apr 1, 2026 source file |
| Kadlec Regional Medical Center Richland · Kennewick-Richland, WA HC POTASSIUM | $59.50 | $85.00 | Apr 1, 2026 source file |
| Lincoln Hospital Davenport · Davenport, WA Blood potassium level | $60.03 | $66.70 | Sep 14, 2026 source file |
| PeaceHealth Southwest Medical Center Vancouver · Portland-Vancouver-Hillsboro, OR-WA BLOOD POTASSIUM LEVEL | $61.10 | $94.00 | — source file |
| Arbor Health Morton Hospital Morton · Centralia, WA Blood potassium level | $63.24 | $102.00 | May 18, 2026 source file |
| Othello Community Hospital Othello · Othello, WA Blood potassium level | $66.00 | $88.00 | Jul 1, 2026 source file |
| Astria Toppenish Hospital Toppenish · Yakima, WA Potassium | $66.30 | $102.00 | — source file |
| Samaritan Hospital Moses Lake · Moses Lake, WA Blood potassium level | $69.00 | $69.00 | — source file |
| Astria Sunnyside Hospital Sunnyside · Kennewick-Richland, WA Potassium Body Fluid | $78.66 | $138.00 | — source file |
| Forks Community Hospital Forks · Port Townsend, WA Blood potassium level | $80.80 | $101.00 | Jul 9, 2026 source file |
| Providence St Mary Medical Center Walla Walla · Walla Walla, WA HC POTASSIUM | $81.20 | $116.00 | Apr 1, 2026 source file |
| PeaceHealth St John Medical Center Longview · Longview-Kelso, WA BLOOD POTASSIUM LEVEL | $83.85 | $129.00 | — source file |
| Mason General Hospital & Family of Clinics Shelton · Shelton, WA Potassium | $120.75 | $161.00 | — source file |
| Lake Chelan Community Hospital Chelan · Wenatchee-East Wenatchee, WA Blood potassium level | $174.14 | $174.14 | Sep 1, 2026 source file |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Seattle-Tacoma-Bellevue, WA | 18 | $10.50 | $32.57 |
| Spokane-Spokane Valley, WA | 6 | $14.00 | $34.68 |
| Kennewick-Richland, WA | 4 | $40.15 | $50.82 |
| Wenatchee-East Wenatchee, WA | 3 | $20.70 | $53.60 |
| Centralia, WA | 2 | $57.72 | $60.48 |
| Moses Lake, WA | 2 | $54.02 | $61.51 |
| Mount Vernon-Anacortes, WA | 2 | $38.35 | $45.58 |
| Port Townsend, WA | 2 | $48.00 | $64.40 |
| Portland-Vancouver-Hillsboro, OR-WA | 2 | $6.21 | $33.66 |
| Pullman, WA | 2 | $37.60 | $44.72 |
| Aberdeen, WA | 1 | $31.86 | $31.86 |
| Bellingham, WA | 1 | $48.10 | $48.10 |
| Bremerton-Silverdale-Port Orchard, WA | 1 | $43.30 | $43.30 |
| Davenport, WA | 1 | $60.03 | $60.03 |
| Ellensburg, WA | 1 | $53.55 | $53.55 |
| Friday Harbor, WA | 1 | $19.50 | $19.50 |
| Goldendale, WA | 1 | $52.00 | $52.00 |
| Ilwaco, WA | 1 | $41.25 | $41.25 |
| Longview-Kelso, WA | 1 | $83.85 | $83.85 |
| Olympia-Lacey-Tumwater, WA | 1 | $30.68 | $30.68 |
| Othello, WA | 1 | $66.00 | $66.00 |
| Port Angeles, WA | 1 | $15.20 | $15.20 |
| South Bend, WA | 1 | $35.70 | $35.70 |
| Shelton, WA | 1 | $120.75 | $120.75 |
| Walla Walla, WA | 1 | $81.20 | $81.20 |
| Yakima, WA | 1 | $66.30 | $66.30 |
Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.
Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.
Lowest The lowest cash price among those hospitals.
Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More
What it is
A potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
Potassium blood test in other states
- Alabama$26.10
- Alaska$61.50
- Arizona$29.95
- Arkansas$19.43
- California$73.10
- Colorado$69.88
- Connecticut$26.08
- Delaware$60.74
- District of Columbia$63.56
- Florida$64.75
- Georgia$32.80
- Hawaii$47.60
- Idaho$35.70
- Illinois$44.80
- Indiana$28.50
- Iowa$34.00
- Kansas$32.76
- Kentucky$46.40
- Louisiana$16.47
- Maine$25.08
- Maryland$11.58
- Massachusetts$31.00
- Michigan$22.53
- Minnesota$44.90
- Mississippi$27.00
- Missouri$41.32
- Montana$40.80
- Nebraska$46.91
- Nevada$62.00
- New Hampshire$47.59
- New Jersey$5.90
- New Mexico$63.41
- New York$21.59
- North Carolina$39.30
- North Dakota$41.22
- Ohio$23.35
- Oklahoma$32.55
- Oregon$21.75
- Pennsylvania$33.10
- Puerto Rico$15.00
- Rhode Island$29.50
- South Carolina$41.74
- South Dakota$54.90
- Tennessee$26.13
- Texas$65.23
- Utah$110.70
- Vermont$41.58
- Virginia$39.00
- West Virginia$25.25
- Wisconsin$29.04
- Wyoming$22.80
Median cash price across the state's hospitals.